Bactra             Tortricidae, Olethreutinae, Olethreutini
Barbara            Tortricidae, Olethreutinae, Eucosmini
Batrachedra        Batrachedridae
Battaristis        Gelechiidae, Anacampsinae
Bembecia           Sesiidae, Sesiinae, Synanthedonini
Bisigna            Oecophoridae
Blastesthia        Tortricidae, Olethreutinae, Eucosmini
Blepharita         Noctuidae, Cuculliinae
Blepharosis        Noctuidae, Hadeninae
Bleptina           Noctuidae, Herminiinae
Boarmia            Geometridae, Ennominae
Bombyx             Bombycidae
Bomolocha          Noctuidae, Hypeninae
Bonagota           Tortricidae, Tortricinae, Cochylini
Brachmia           Gelechiidae, Dichomerinae
Bradina            Pyralidae, Pyraustinae
Brithys            Noctuidae, Hadeninae
Bryotropha         Gelechiidae, Gelechiinae
Bucculatrix        Bucculatricidae
Bupalus            Geometridae, Ennominae
Busseola           Noctuidae, Amphipyrinae